1. Biorobotics Laboratory, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul, Republic of Korea.
2. Department of Radiology, Chonbuk National University Hospital, Jeonju, Republic of Korea.
3. Research Institute of Clinical Medicine of Chonbuk National University, Jeonju, Republic of Korea.
4. Department of Rehabilitation Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
5. Department of Biomedical Engineering Research Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
6. Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.